diff options
| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2025-10-17 13:26:29 +0000 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-10-27 19:56:41 +0100 |
| commit | 187d1b27a1e436822c31e43aa58505f6dd8987e2 (patch) | |
| tree | afe7e2829396cbe32adc4c5c5a5b56a15ee1e235 /drivers/pci/controller/dwc/pcie-qcom-common.c | |
| parent | 83be4bee57f0374ff751aaff3fef4af0af66ec81 (diff) | |
RAS/AMD/ATL: Require PRM support for future systems
Currently, the AMD Address Translation Library will fail to load for new,
unrecognized systems (based on Data Fabric revision). The intention is to
prevent the code from executing on new systems and returning incorrect
results.
Recent AMD systems, however, may provide UEFI PRM handlers for address
translation. This is code provided by the platform through BIOS tables. These
are the preferred method for translation, and the Linux native code can be
used as a fallback.
Future AMD systems are expected to provide PRM handlers by default. And Linux
native code will not be used.
Adjust the ATL init code so that new, unrecognized systems will default to
using PRM handlers only.
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: "Mario Limonciello (AMD)" <superm1@kernel.org>
Link: https://patch.msgid.link/all/20251017-wip-atl-prm-v2-2-7ab1df4a5fbc@amd.com
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-common.c')
0 files changed, 0 insertions, 0 deletions